Spray-carbureter.



GOTTFRIED rLUMM, or BERLIN, GERMANY."

SPRAY-CARBURETER.

Specification of Letters Patent.

Application filed May 2, 1911. Serial No. 624,638.

'To all whom @limo/y concern- Be it linown that I, Gor'rrnmn ILUMM, a subject of thetirerman lniperoufand residingv at Berlin, German Empire, have inventcdcertain new and useful Improve-v ments in Sp'ay-Garburcters, of which the following is ya specification.

My invention relates to improvements in spray-carbureters lor internal-combustion engines, and has for its object the prevention of waste of the liquid fuel employed.

In carbureters having a crown-nozzle and revolving mixing mechanism cmisiderable loss ot' fuel is occasioned through lthe liquid particles being caught up by the rotary mixing devices, and, by reason ofthe ccnt1-ifugal force, thrown "against the wall of the' carburetor cylinder, down which they run unutilized. owing to the formation of an empty conical space above the horizontally terminating nozzle-crown on which the revolving mixing devices are mounted, which space l'is not enteredby the explosive mixture `flowing toward the throttle-valve. Into this vacuum uuvaporized particles ol 'fuel are drawn, and settle on the horizontal surface of the nozzle-crown,l finally flowing down its outside wall. Since only a very small part of these particles is vaporized by the ascending current of carbureted air, the waste is pronounced; wWith the object of obviating this loss of fuel, I avoid a vacuum above the nozzle-crown 4by the provision of a suitable conical structure, for instance a coneshaped support 'for the revolving mixing devices, Awhich also causes any particles of fuel which may settle upon it, like the particles caught up by the mixing devices themselves, to be thrown against the wall of the carbureter cylinder, whence all the particles are conducted in suitable manner to the inside wall'of' a porous nozzle-pipe which surrounds the nozzle-crown. The panticles are absorbed by the porous material and are vaporized by the current of carbureted air flowing up over the same.

An embodiment of the invention is illustrated in the accompanying drawing, in avhicli Figure. l is a vertical section on the line II---II--III of Fig. Q, while Fig. Q is a plan of the rim of the lliorous, nozzle-pipe.

The nely divided liquid fuel from the crown-nozzle u, rushing through the apertures b in the walls of the chamber n, min- Waste also takes placeI I fillet 1.

material, with the air entering at c and is vaporized. Apart of those particles which Pat-entedJuly 2, 1912.

remain unvaporized adheres to the wall of the nozzle-pipe al and is converted into vapor by the succeedingcurrent of carbureted air; while another part is caught up by the beaters f and, blades g of rotary pulverizing or mixing mechanism and hurled against 'the wall yof the carburetor cylinder A. A third part of the unvaporized particles is deposited upon the carrier h of the beaters and blades, which is mounted on the head c and turns on ball-bearings p. The carrier is of cone shape, corresponding to the direction of flow of the-current of cai'- bureted air. This will especially be the case when the explosive mixture which has entrained these particles is deflected toward the center by the supplementary airentering at fm. The liquid particles flow down toward the lower edge of the rotary cone 71l and having arrived there are likewise thrown against the wall of the carbureter cylinder A.

The upper edge or rimz' of the porous nel,-

zlc-pipe d is preferably of metal and trends outward and upward, fitting close against the wall of the carburetor cylinder A, This rim l[has an annular rib or filleti1 cast on it,

and is furnished with holes /f (Fig. 2) to admit passagey of the supplementary air.

flowing in at m, Between the holes grooves Z are formed at intervals in the fillet/l'1 for the purpose of conductingto the inner wall of the porous nozzle-pipe (Z the particles of liquid fuel-which having been thrown against the walls of the carburetcr A, run down it and collect in front. of the Arrived at the inside wall-fof the nozzle-pipe the particles are absorbed by the porous material and vaporized by the ascending current of/carburetcd air. In this manner there are no particles of liquid fuel wasted.

Having thus described my invention, I declare that what I claim is v 4l. In a spray-carbureter, in combination, a nozzle-structure presenting a revolving conical top with .mixing mechanism, and a porous nozzle-pipe, surrounding the said structure and constituting an air inlet, and adapted to conduct to its inside wall the entrained particles of liquid fuel thrown against the wall of the carbureter cylinder Lessinia? Whose upper rim trends upward and out- .ward and fit-s close to the wall of the carbu- 'reter lcylinder, so that entrained particles of liquid, fuel running down thel cylinder wall In'ay baronducted by the rim to the insidzewall ot'the nozzle-pipe, substantially as 5 and, for the purposes described.A v

3. In a spray-carbureter, combination, a

-chamber having main and supplementary,

air inlets, a nozzle-structure located therein and presenting-a revolving conical top with mechanism, and a porous nozzle- 2@"pi'pa' surrounding'y the saidv structure, and constituting a niain air duct whose upper riin trends upward and outward, and lits4 close to the wall of the chamber, and is furnished with holes for the passage of the 25 l:supplenientary air, substantially as and for the .purposes described.

4f. In a spraycarbureter,'in combination, a

chamber having main and lsuppleinentary air inlets,a nozzle-structure located therein and @presenting a revolving conical top with mi'X- 'ing mechanism, and a porous nozzle-pipe,l

surroundingthe saidv structure, and constitut-ing a main air duct whose upper rim trends upward and outward, and fits close to the wall of the chamber, and is furnished Iwith holes for the passage of theY suppleinentary air, and 'with radial grooves loetween the said holes for conducting to the inside wall' of the nozzle-pipe particles ofl liquid fuel ritlning down the cylinder wall,

substantially as and for the purposes de! scribed. v i g 5. In a sprM-carbureter, .in combination,

.achain'ber having main and 4supplementary air inlets, a nozzle-.structure located therein and presenting a revolving conical top with mixing mechanism, and a porous noZ`zlepipe surrounding the said structure, yand constituting a main air duct whose upper rim j trendsupward v,and outward, and fits closeto the wall of the chamber, and presents an annular fillet furnished with holes for the passage of the supplementary air, and with radial grooves between the said holes for conducting'to the inside Wall of 'thenozzle-pipe particles of liquid'fuel run ning down the cylinder wall, substantially as andfor t-li-e purposes described. In testimony whereof I affix my signature in presence of two witnesses.

i i GOTTFRIED PLUMM. Witnesses: HENRY Hasrnn,

WOLDEMAR HAUPT. 

